WHAMs 2 & 3 models were built by Hugo/Vincent while Jim and I were busy building things.  When Jim & I got to bringing the other HAMs up, we did not realise there was a modification needed to generate a non-cust medm screen.  This screen is the PAYLOAD button on the ISI OVERVIEW that gives access to the SUS and the SUS-model-is-not-running-so-trip-the-ISI override controls.

The attached image shows the model elements needing correction.

I switched the Chamber Guardian to STOP.  Interestingly, it then reloaded its code and switched itself to PAUSE, huu?  Anyway, it stayed there and then the ISI Guardian was switched to READY.  The utility of oing this is to keep HEPI ISOLATED.  Once there, I opened the MASTERSWITCH and updated the safe.snap for FF settings.

JimB then restarted the FE.  The medms are now available and the ISI reisolated fine.

Apparently, I failed to file a work permit nor Inegration Issue, else, I'd list those items here.